Helium detection test tool for circular aluminum shell

Abstract

The utility model discloses a helium detection test tool for a circular aluminum shell. The helium detection test tool comprises a base, a cylinder, a rear sealing bracket, a shell inner wall bracket and a central bracket, the base is provided with a supporting plate, the air cylinder and the rear sealing support are installed on the two sides of the supporting plate respectively, the center support penetrates through the rear sealing support to be connected with the air cylinder, and the air cylinder drives the center support to achieve telescopic movement. The center support is sleeved with the shell inner wall support, and the two ends of the shell inner wall support are connected with the center support and the rear sealing support respectively. The rear sealing support is provided with a first air hole, the shell inner wall support is provided with a second air hole, and the first air hole is communicated with the second air hole. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to a kind of round aluminum shell helium detection test tooling. BACKGROUND

[0002] Power battery aluminum shell is by aluminum material extrusion molding, overall is cylindrical, two heads are without cover, this aluminum shell slender shape, wall thickness is relatively thin, extrusion molding there can be crack or pinhole in middle, thus need airtightness detection to improve use safety, and in view of this, we propose a kind of helium detection tooling device scheme of round power battery shell. UTILITY MODEL CONTENTS

[0003] To at least solve one described problem, the utility model provides a kind of new structural scheme, and the helium detection test tooling of the round aluminum shell of the utility model adopts following technical scheme:

[0004] A kind of round aluminum shell helium detection test tooling, it includes base, cylinder, rear seal support, shell inner wall support, center support;

[0005] Base has support plate, cylinder and rear seal support are respectively installed at the two sides of support plate, center support is connected with cylinder by passing through rear seal support, to drive center support by cylinder to realize telescopic activity;Shell inner wall support is sleeved in center support, and the two ends of shell inner wall support are respectively connected with center support and rear seal support;

[0006] The rear seal support is equipped with first gas hole, and the shell inner wall support is equipped with second gas hole, and the first gas hole is communicated with the second gas hole.

[0007] Preferably, the support plate is perpendicular to the base.

[0008] Preferably, rear seal support is equipped with gas channel, and the first gas hole is communicated with the gas channel;The shell inner wall support is hollow structure, and the first gas hole is communicated with the second gas hole by gas channel.

[0009] Preferably, center support is integrated structure, and center support includes shaft and joint, and the joint is located at the first end of shaft, and the end of shaft is connected with the movable end of cylinder.

[0010] Preferably, the rear seal support has a through hole, and the end of the shaft is connected with the movable end of the cylinder and is connected in the through hole.

[0011] Preferably, the joint includes a head and a first docking portion, and the diameters of the head and the first docking portion are both greater than the diameter of the shaft;The rear seal support is provided with a second docking portion, and the diameter of the second docking portion is smaller than the diameter of the rear seal support, and the shell inner wall support is connected with the first docking portion and the second docking portion respectively.

[0012] Preferably, the first abutting part is sleeved with a first sealing ring, the second abutting part is sleeved with a second sealing ring, and the center support is driven to retract by the air cylinder, so that the first sealing ring and the second sealing ring abut on the two ends of the inner wall support of the shell at the same time, to limit the air from entering the inner wall support of the shell from the two ends of the inner wall support of the shell.

[0013] Preferably, the first abutting part and the second abutting part are both conical.

[0014] Compared with the background art, the utility model has the beneficial effects that:

[0015] The utility model discloses a kind of round aluminum shell helium detection test tool, and the scheme adopts conical surface sealing, and sealing is simple and reliable, and conical surface structure is also convenient for product loading, and product sealing is only subjected to sealing ring elasticity, so it will not be damaged, testing is convenient and fast.It has the advantages of simple structure, compact fit, reasonable design etc.;Therefore, it is a product with superior performance in both technicality and economy. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 For the round aluminum shell helium detection test tool provided in the preferred embodiment of the utility model, see the schematic diagram of the round aluminum shell helium detection test tool;

[0017] Fig. 2 For the round aluminum shell helium detection test tool provided in the preferred embodiment of the utility model, see the first exploded state schematic diagram of the round aluminum shell helium detection test tool;

[0018] Fig. 3 For the round aluminum shell helium detection test tool provided in the preferred embodiment of the utility model, see the second exploded state schematic diagram of the round aluminum shell helium detection test tool;

[0019] Fig. 4 For the round aluminum shell helium detection test tool provided in the preferred embodiment of the utility model, see the cross-sectional state schematic diagram of the round aluminum shell helium detection test tool. DETAILED DESCRIPTION

[0020] The embodiments of the utility model are described in detail below, and the embodiment examples are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0021] In the utility model, except for explicit provision and limitation, if the terms "assemble", "connect" and "connect" are used, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected;It can also be a mechanical connection;It can be directly connected, or connected through an intermediate medium, or two elements can be connected internally. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0022] The technical scheme and the beneficial effects of the present application will be clearer and more explicit through the further description of the specific embodiments of the present application in combination with the accompanying drawings of the present application. The description of the embodiments with reference to the accompanying drawings is exemplary and is intended to explain the present application, and cannot be understood as a limitation of the present application.

[0023] The preferred embodiment of the present application provides: Figs. 1-4 As shown in the figure, a kind of round aluminum shell helium detection test tool, it includes base 1, cylinder 2, rear sealing support 3, shell inner wall support 4, center support 5;Base 1 has support plate 11, the support plate 11 is perpendicular to base 1 setting, increase operating space, it is convenient for shell plug-in.

[0024] Cylinder 2 and rear sealing support 3 are respectively installed on the two sides of support plate 11, center support 5 passes through rear sealing support 3 and is connected with cylinder 2, to drive center support 5 by cylinder 2 and realize telescopic activity;Shell inner wall support 4 is sleeved in center support 5, and the two ends of shell inner wall support 4 are connected with center support 5 and rear sealing support 3 respectively;

[0025] The rear sealing support 3 is provided with first air hole 31, and the shell inner wall support 4 is provided with second air hole 41, and the first air hole 31 is communicated with the second air hole 41. The rear sealing support 3 is provided with air channel 32, and the first air hole 31 is communicated with the air channel 32;The shell inner wall support 4 is a hollow structure, and the first air hole 31 is communicated with the second air hole 41 through the air channel 32.

[0026] The center support 5 is an integral structure, and the center support 5 includes shaft 51 and joint 52, the joint 52 is located at the first end of the shaft 51, and the end of the shaft 51 is connected with the movable end of the cylinder 2. The rear sealing support 3 has a through hole 33, and the end of the shaft 51 is connected with the movable end of the cylinder 2 and is connected in the through hole 33, and the end of the shaft 51 is provided with a sealing ring 57, so as to improve the connection air tightness of the shaft 51 and the through hole 33, and the end of the shaft 51 is provided with a ring groove for embedding the sealing ring 57.

[0027] The joint 52 comprises a head 53 and a first abutting portion 54, the diameters of both the head 53 and the first abutting portion 54 are larger than the diameter of the shaft 51; the rear sealing support 3 is provided with a second abutting portion 34, the diameter of the second abutting portion 34 is smaller than the diameter of the rear sealing support 3, the inner wall support 4 of the shell is connected with the first abutting portion 54 and the second abutting portion 34 respectively, the diameters of the first abutting portion 54 and the second abutting portion 34 correspond to the inner diameter of the center support 5. The first abutting portion 54 is sleeved with a first sealing ring 55, the second abutting portion 34 is sleeved with a second sealing ring 56, the first sealing ring is installed into the aluminum shell first, the center support 5 is driven to retract by the air cylinder 2, so that the first sealing ring 55 and the second sealing ring 56 abut on both ends of the inner wall support 4 of the shell at the same time, so as to limit the air from entering the inner wall support 4 of the shell from both ends of the inner wall support 4 of the shell. The first abutting portion 54 and the second abutting portion 34 are both conical.

[0028] The power battery aluminum shell 6 is formed by extrusion of aluminum material, and is in a whole cylindrical shape without cover at both ends. Such aluminum shell is long and thin, and the wall thickness is relatively thin. There may be cracks or sand holes in the middle during extrusion forming, so that air tightness detection is needed to improve the safety in use.

[0029] The difficulties of air tightness detection of such aluminum shell are: 1. both ends without cover, which needs to be sealed at both ends; 2. the wall thickness is relatively thin, which cannot be sealed by end face or the sealing effect is poor, and the sealing element needs to be replaced frequently; 3. long and thin shape, low product strength, so that the pressing of both ends is easy to cause product damage.

[0030] In the design, the cylindrical surface of the aluminum shell is sealed, the center support 5 is retracted by the air cylinder 2, the first abutting portion 54 and the second abutting portion 34 are connected to both ends of the aluminum shell, and the taper surfaces of the first abutting portion 54 and the second abutting portion 34 are used to seal the aluminum shell, and the air tightness is further strengthened by the first sealing ring 55 and the second sealing ring 56. The pulling force of the air cylinder 2 should be adjusted according to the actual needs, so that the product is not easy to deform when sleeved into the tool. After the air cylinder 2 is retracted and the aluminum shell is pressed by the sealing ring 57, the helium detection equipment is connected to the first gas hole 31, the inside of the aluminum shell is vacuumized through the first gas hole 31, the air channel 32 and the second gas hole 41, and the air tightness detection is performed.

[0031] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model, and the illustrative description of the above terms in the specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Through the description of the above structure and principle, those skilled in the art should understand that the utility model is not limited to the above specific embodiments, and improvements and replacements of the technology known in the art based on the utility model fall within the protection scope of the utility model, which should be limited by each claim.

Claims

1. A round aluminum can helium detection test fixture, characterized by: It comprises a base, a cylinder, a rear sealing support, an inner wall support of a shell, and a center support; The base has a support plate, the cylinder and the rear sealing support are respectively installed on two sides of the support plate, the center support is connected with the cylinder through the rear sealing support to be driven by the cylinder to realize telescopic movement, and the inner wall support of the shell is sleeved on the center support, and two ends of the inner wall support of the shell are respectively connected with the center support and the rear sealing support. The rear sealing support is provided with a first air hole, the inner wall support of the shell is provided with a second air hole, and the first air hole and the second air hole are in communication.

2. The round aluminum shell helium leak test fixture of claim 1, wherein: The support plate is perpendicular to the base.

3. The round aluminum shell helium leak test fixture of claim 1, wherein: The rear sealing support is provided with an air channel, the first air hole is in communication with the air channel, the inner wall support of the shell is a hollow structure, and the first air hole is in communication with the second air hole through the air channel.

4. The round aluminum shell helium leak test fixture of claim 1, wherein: The center support is an integral structure, and comprises a shaft and a joint, the joint is located at a first end of the shaft, and a second end of the shaft is connected with a movable end of the cylinder.

5. A round aluminum case helium detection test tool according to claim 4, characterized in that: The rear sealing support is provided with a through hole, the second end of the shaft is simultaneously connected with the movable end of the cylinder and inserted into the through hole.

6. A round aluminum case helium detection test tool according to claim 4, characterized in that: The joint comprises a head and a first connecting part, diameters of the head and the first connecting part are both greater than a diameter of the shaft, the rear sealing support is provided with a second connecting part, a diameter of the second connecting part is less than a diameter of the rear sealing support, and the inner wall support of the shell is connected with the first connecting part and the second connecting part.

7. A round aluminum case helium detection test tool according to claim 6, characterized in that: The first connecting part is sleeved with a first sealing ring, the second connecting part is sleeved with a second sealing ring, the center support is driven to retract by the cylinder, the first sealing ring and the second sealing ring are simultaneously abutted on two ends of the inner wall support of the shell to limit air from entering the inner wall support of the shell.

8. The round aluminum case helium leak test tooling of claim 6, wherein: The first connecting part and the second connecting part are both conical.

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